It looks like we may have some information on another Pryor who disappeared from records. I’m not sure if she was a Prior by marriage or birth, however there’s an Elizabeth Prior who is reported to have been murdered. She was murdered by J. P. Watson who The Oregon Daily Journal described as an “arch-murderer” and “super-bigamist”. The article published on 11 May 1920 states he was known by many aliases and was accused of killing 9 wives and many more. His real name was reported to be Joseph Gillman, yet his record from San Quentin (see image above) stated his surname as Gillian. Included in the long list of multiple wives and murders was Elizabeth Prior who was killed with a hammer near Plum Station, WA.

Elizabeth Prior of Wallace, Idaho, married March 15, 1919, at Coeur d’Alene, Idaho, skull crushed with a sledge hammer and body buried near Plum station, Wash., where it was found.

There’s a marriage for an Elizabeth Prior on 25 March 1919 in Kootenai, ID to a Milton Lewis. There were no ages on the marriage record, however the record states that both the bride and groom were from Sacarmento, CA. Did we just find another alias for J.P. Watson? Appears so. Crimezzz.net has an article on J. P. Watson (yes, under the section “Serial Killers”). It also gives this same marriage date.